[Qemu-devel] [PATCH v4 03/14] virtio-scsi: Add VirtIOSCSIVring in VirtIOSCSIReq

[Fam Zheng <famz@redhat.com>]

Move VirtIOSCSIReq to header and add one field "vring" as a wrapper
structure of Vring, VirtIOSCSIVring.

This is necessary for coming dataplane code that runs uses vring on
iothread.

Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 include/hw/virtio/virtio-scsi.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/include/hw/virtio/virtio-scsi.h b/include/hw/virtio/virtio-scsi.h
index b91d326..848a1d3 100644
--- a/include/hw/virtio/virtio-scsi.h
+++ b/include/hw/virtio/virtio-scsi.h
@@ -17,6 +17,8 @@
 #include "hw/virtio/virtio.h"
 #include "hw/pci/pci.h"
 #include "hw/scsi/scsi.h"
+#include "sysemu/iothread.h"
+#include "hw/virtio/dataplane/vring.h"
 
 #define TYPE_VIRTIO_SCSI_COMMON "virtio-scsi-common"
 #define VIRTIO_SCSI_COMMON(obj) \
@@ -153,6 +155,15 @@ struct VirtIOSCSIConf {
     char *wwpn;
 };
 
+struct VirtIOSCSICommon;
+
+typedef struct {
+    struct VirtIOSCSICommon *parent;
+    Vring vring;
+    EventNotifier host_notifier;
+    EventNotifier guest_notifier;
+} VirtIOSCSIVring;
+
 typedef struct VirtIOSCSICommon {
     VirtIODevice parent_obj;
     VirtIOSCSIConf conf;
@@ -185,6 +196,8 @@ typedef struct VirtIOSCSIReq {
      * */
 
     VirtQueueElement elem;
+    /* Set by dataplane code. */
+    VirtIOSCSIVring *vring;
     SCSIRequest *sreq;
     size_t resp_size;
     enum SCSIXferMode mode;
-- 
1.9.3